Robert r



(No Model.)

Patented Oct. 22, 1895.

R. R. BALL.

LOOK N0. 548,418.

witnaowo 6. 771.

Usi rnn STATES Fatnw'r @rrrcn.

ROBERT R. BALL, OF NElV YORK, N. Y.

LOCK.

SPECIFICATION forming part of Letters Patent No. 548,418, dated October 22, 1895.

A plication filed May 28, 1894- Serial No. 512,818- (No model.)

To all whom it may concern:

Be it known that 1, ROBERT R. BALL, a citizen of the United States, residing in the city of New Yorlgcounty and State ofNewYork,have invented a new and useful Locking Device, of which the following is a specification.

My invention relates to improvements in looks, and has for its objects, first, to provide a simple, cheap, and effective tubular locking device, occupying small space, easy of application, and especially adapted to standard latches which are operated by a spindle; further, to construct a lock which is difficult to pick or operate without the proper key. I attain these objects in the manner fully set forth in the accompanying drawings, which form a part of this application, and in which Figure 1 is a central vertical section of my novel loch as upon the line at a: of Fig.3, and shows in connection therewith a suitable form of latch. Fig. 2 is a similar vertical section, but showing a slightlymodified construction and adapted to a knob-handle. Fig. 3 is a face view of the escutcheon N. Fig. 4 is a perspective View of the slidable interlocking piece employed in the construction illustrated in Fig 2. Fig. 5 is a perspective view of the slidable interlocking piece illustrated in Fig. 1. Fig. 6 is a perspective view of the keysocket. Figs. 7 and 8 show the several parts of the key-socket disassembled. Fig. 9 is a plan view of the tube or lock-case. Fig. 10 shows the key in elevation. Fig. 11 is an end elevation of Fig. 2.

Similar letters and numerals of reference denote like or corresponding parts throughout the several views.

My novel lock can only be operated by a key which is especially fitted to the socket. By the insertion of this key the several parts are operative] y assembled.

Referring to the letters and numerals of reference, L indicates a suitable form of latch, which may be either a surface or mortiselatch. Said latch, as will be seen, is provided with a square hole, through which the rectangular spindle H of my lock is inserted. Upon the inner end of this spindle (see Fig. 1) 1 have so cured a thumb-piece N. The outer casing C maybe of the construction shown in either Figs. 1 or 2. It is of a cylindrical formation and serves to inclose the rotary tube A. The

interlocking parts of this device are contained within the tube, as will be clearly understood with reference to Figs. 1 and 2. The innereud of this tube A is closed by means of a plug B, which is secured in position in any preferred manner. It may be pinned or screwed, as shown. This plug is provided with a central base to, through which the spindle H freely passes. In Fig. 1 of the drawings 1 have shown a collar 19, keyed to the spindle adjacent to the plug, which collar prevents the withdrawal of said spindle and insures its retainment in the desired position. In Fig. 2 of the drawings I show a pin 13, which answers the same purpose and also serves in another capacity, as will be later referred to.

Within the rotary tube A is carried a movable locking-piece 3. This is clearly illustrated in Figs. 4 and 5. As shown, this piece is provided with grooves c c to receive the ways 0 c, stamped in at opposite sides from the tube, which prevent a rotary movement of the locking-piece independent of the tube A. The outer end of this locking-piece is beveled, as indicated at b, for engagement of the points of the key. The other end of this locklug-piece is provided with a central orifice f to receive the end of the spindle H. The orifice of one form of locking-piece, it will be seen, is square, while that of the other form is round. The same is true of the end of the spindle H, as shown, and said spindle is designed to fit into said orifice in the manner.

illustrated against the resistance of a spiral spring This spring serves to force the locking-piece outward ofi from the spindle to insure its disengagement therewith at such times when the key is not inserted.

Referring to Figs. 2 and 4 it will be seen that the locking-piece is provided with recesses d, which serve to engage the pin 12 at such times when said locking-piece is forced forward by the insertion of the key, and by this connection the spindle and tube are op eratively united and may be turned together. In Figs. 1 and 5 these two parts are operatively connected by means of the square orifice f engaging the square end of the spindle against the action of the spring 1'.

Within the end of the tube A, l fit a speciallyconstructed key socket 1. This socket is formed complete of three parts, to wit: the two side plates and a disk 2, which disk accurately fits the inside of the tube A. These plates are each provided with spring-Wards g,which are pressed or stamped in from the stock, one end being left free, thus affording said wards a slight yielding or spring action. In addition to these wards I provide additional obstructions in the form of nipples 9 The location of these may be varied at will to accommodate the differences in the different keysi The disk 2, as shown, is connected to the plates by having slots designed to receive the points is of said plates, and whereby one end of the plates are firmly secured. The outer, upper, and lower corners are also provided with points g, which fit into slots h of the tube and which serve to retain the forward-ends of the plates together, thus formingacomplete key-socket from sheet metal in an efficient and inexpensive manner.

The key Kis provided with ways-n and n,

which are fitted to the wards of the socket The points m and m of the key are designed to freely pass between the plates and through the slots 0 of the disk and are for thepnr pose of engagement with the bevel portion 3 of the locking-piece.

When the key is insertedas above stated and it comes in contact with thelocking-piece, the said key and locking-piece. are forced home against the action otithe before-mentioned spring a, thus uniting the locking-piece with the spindle and permitting of a rotary movement being impartedthereto. 1

Having thus described my invention, I claim 1. In a locking device of the class described, the combination with a rotary cylindrical operating tube, of a flat key socketformed of sheet metal substantially as shown and pro vided with one or more spring wards for the frictional engagements for the ways of the key, for the purpose specified.

2. Ina locking device of the class described the combin'ationwith a knob and a rectangular spindle, of a rotary tube interposed between said knob and spindle; a cylindrical movable locking piece having ways, 6, upon its periphery to engage ways of the tube and the peripheral beveled end, b; means for interlocking the said. locking piece with the spindle, and a spring for normally holding the said locking piece out of engagement with the spindle, all operatively assembled substantially as set forth.

3. In'alocking'device of the class described, thecorn'bination with-a spindle, of a tube secured on the end thereof, a locking piece fitted in the said tube and-movable upon said spindle provided with ajperipheralbeveled surface, akeysocket in the end of the tube constructedwithopenings in the disk to permit of thepoints of the keyextending through and engaging said bevel portion'of the looking piece, means for uniting the locking piece to the spindle, substantiallyas set forth.

4; In locking :mechanism of the class described the combination with acasing, of a cylindrical tube A, plug 13, in the end thereof having a spindle journaled therein, a pin, 19, supportedin said spindle, a slidable locking piece fitted in said tube and having recesses, d, to'engage. the-pin of the spindle'bythe introduction of a key, substantially as set forth.

5. Ina locking device of the character described the combination of a cylindrical tube A, provided with ways c, c, the beveled interlocking piece 3, having wayse, a keysocket formed of plates 1, and disk 2, the spindle H, springf, all arranged and to be operated by a-key substantiallyasset forth.

ROBERT -R. BALL. Witnesses:

ERNEST H. BALL, FRANK GRADY. 

